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目的:探讨下颌升支截骨术不同术式矫治下颌前突畸形的效果。方法:选择我院口腔颌面外科43例下颌前突畸形患者,随机分为下颌升支矢状截骨术(SSRO)组(25例)和下颌升支垂直截骨术(IVRO)组(18例),比较两组患者的力、咀嚼效能以及髁突相对位置变化。结果:SSRO组术后3、6个月力、嚼效功能改善程度明显高于IVRO组(P<0.05);术后髁突向前、向后移位SSRO组分别为16.0%、84.0%,IVRO组分别为44.4%、55.6%,两组差异具有统计学意义(均P<0.05)。结论:SSRO术式矫治下颌前突畸形在力、咀嚼效能、髁突位置改变方面均优于IVRO术式,且其对患者颜面侧方影响小,值得临床推广应用。
Objective: To investigate the effect of different operation of mandibular ascending osteotomy on correction of mandibular protrusion deformity. METHODS: Forty-three patients with mandibular protrusion deformity undergoing oral and maxillofacial surgery in our hospital were randomly divided into two groups: submaxillary mandibular sagittal osteotomy (SSRO) group (25 cases) and mandibular ascending segmental vertical osteotomy (IVRO) group Cases), the two groups of patients were compared force, masticatory performance and condylar relative position changes. Results: The improvement of force and chewing efficacy at 3 and 6 months after operation in SSRO group was significantly higher than that in IVRO group (P <0.05). The condyles in SSRO group were 16.0% and 84.0% The IVRO group was 44.4% and 55.6% respectively, with significant difference between the two groups (all P <0.05). CONCLUSIONS: SSRO is superior to IVRO in mandibular protrusion deformity in terms of force, masticatory performance and condyle position change, and its effect on lateral face of the patient is small, which is worthy of clinical application.